Overview
The OP295GS-REEL7 is a dual CBCMOS operational amplifier produced by Analog Devices Inc. It is known for its rail-to-rail output swing and high dc accuracy, making it suitable for a variety of applications. The OP295 series combines the benefits of bipolar and CMOS technologies, offering lower noise and higher accuracy compared to pure CMOS designs. This amplifier is particularly useful in single-supply designs and can operate effectively in systems with supply voltages as low as 3 V, such as those using lithium batteries.
Key Specifications
| Parameter | Symbol | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|---|
| Offset Voltage | VOS | -40°C ≤ TA ≤ +125°C | 300 | 500 | 800 | μV |
| Input Bias Current | IB | VCM = 0 V | 7 | 20 | 30 | nA |
| Input Offset Current | IOS | VCM = 0 V | ±1 | ±3 | ±5 | nA |
| Supply Current per Amplifier | ISY | VOUT = 2.5 V, RL = ∞, -40°C ≤ TA ≤ +125°C | 150 | μA | ||
| Gain Bandwidth Product | GBP | 75 | kHz | |||
| Slew Rate | SR | RL = 10 kΩ | 0.03 | V/μs | ||
| Output Voltage Swing High | VOH | RL = 10 kΩ to GND | 2.9 | V | ||
| Output Voltage Swing Low | VOL | RL = 10 kΩ to GND | 0.7 | 2 | mV | |
| Power Supply Rejection Ratio | PSRR | ±1.5 V ≤ VS ≤ ±15 V, -40°C ≤ TA ≤ +125°C | 85 | 90 | 110 | dB |
Key Features
- Rail-to-Rail Output Swing: The OP295GS-REEL7 offers rail-to-rail output swing, allowing it to drive loads from the negative supply to the positive supply voltage.
- High DC Accuracy: Combines bipolar and CMOS technologies to achieve lower noise and higher accuracy compared to pure CMOS designs.
- Low Offset Voltage: Specified at 300 μV for 5 V operation, ensuring high precision in various applications.
- High Open-Loop Gain: Minimum of 1000 V/mV, suitable for high accuracy systems.
- Low Supply Current: Maximum of 150 μA per amplifier, making it efficient for battery-operated devices.
- Stability with Capacitive Loads: Stable with loads in excess of 300 pF, useful for driving coax cable or large FET transistors.
Applications
- Battery-Operated Instrumentation: Ideal for systems powered by lithium batteries due to its low supply current and ability to operate at 3 V.
- Servo Amplifiers: Suitable for servo control systems requiring high accuracy and stability.
- Actuator Drives: Can drive power transistors and H bridges efficiently, making it suitable for actuator control.
- Sensor Conditioners: Used in sensor conditioning circuits where high accuracy and low noise are critical.
- Power Supply Control: Can be used in power supply control circuits to achieve higher efficiencies and stability.
Q & A
- What is the typical offset voltage of the OP295GS-REEL7?
The typical offset voltage is 500 μV.
- What is the maximum supply current per amplifier for the OP295GS-REEL7?
The maximum supply current per amplifier is 150 μA.
- What is the gain bandwidth product of the OP295GS-REEL7?
The gain bandwidth product is 75 kHz.
- Is the OP295GS-REEL7 stable with capacitive loads?
Yes, it is stable with loads in excess of 300 pF.
- What are the typical applications of the OP295GS-REEL7?
Typical applications include battery-operated instrumentation, servo amplifiers, actuator drives, sensor conditioners, and power supply control.
- Can the OP295GS-REEL7 operate in single-supply designs?
Yes, it can operate effectively in single-supply designs and is specified for 3 V operation.
- What is the slew rate of the OP295GS-REEL7?
The slew rate is 0.03 V/μs with a load resistance of 10 kΩ.
- What is the output voltage swing of the OP295GS-REEL7?
The output voltage swing high is typically 2.9 V and low is typically 0.7 mV with a load resistance of 10 kΩ.
- What is the power supply rejection ratio (PSRR) of the OP295GS-REEL7?
The PSRR is between 85 dB and 110 dB over the specified temperature range.
- Is the OP295GS-REEL7 suitable for driving inductive loads?
Yes, it is suitable for driving inductive loads such as transformers, increasing efficiency in such applications.
